Cleaning brush



FIG. 1 is a perspective view of the cleaning brush.

FIG. 2 is an elevation view of a side of the cleaning brush.

FIG. 3 is a plan view of the bottom of the cleaning brush.

FIG. 4 is an elevation view of the back of the cleaning brush; and,

FIG. 5 is an elevation view of the front of the cleaning brush. 

The ornamental design for a cleaning brush, as shown and described. 